A bunch of Pokemon sprite changes and fixes (#4552)

* A bunch of sprite fixes

- New Basculin Blue and White animations to fix their entry animations
- New Xerneas Neutral entry animation derived from its Active form animation
- Recolored Iron Hands and Iron Bundle back sprites

* Requested changes

src/data/graphics/pokemon.h

@@ -7258,14 +7258,14 @@ const u8 gMonFootprint_QuestionMark[] = INCBIN_U8("graphics/pokemon/question_mar
     const u8 gMonFootprint_Basculin[] = INCBIN_U8("graphics/pokemon/basculin/footprint.1bpp");
 #endif //P_FOOTPRINTS
 
-    const u32 gMonFrontPic_BasculinBlueStriped[] = INCBIN_U32("graphics/pokemon/basculin/blue_striped/front.4bpp.lz");
+    const u32 gMonFrontPic_BasculinBlueStriped[] = INCBIN_U32("graphics/pokemon/basculin/blue_striped/anim_front.4bpp.lz");
     const u32 gMonPalette_BasculinBlueStriped[] = INCBIN_U32("graphics/pokemon/basculin/blue_striped/normal.gbapal.lz");
     const u32 gMonBackPic_BasculinBlueStriped[] = INCBIN_U32("graphics/pokemon/basculin/blue_striped/back.4bpp.lz");
     const u32 gMonShinyPalette_BasculinBlueStriped[] = INCBIN_U32("graphics/pokemon/basculin/blue_striped/shiny.gbapal.lz");
     const u8 gMonIcon_BasculinBlueStriped[] = INCBIN_U8("graphics/pokemon/basculin/blue_striped/icon.4bpp");
 
 #if P_HISUIAN_FORMS
-    const u32 gMonFrontPic_BasculinWhiteStriped[] = INCBIN_U32("graphics/pokemon/basculin/white_striped/front.4bpp.lz");
+    const u32 gMonFrontPic_BasculinWhiteStriped[] = INCBIN_U32("graphics/pokemon/basculin/white_striped/anim_front.4bpp.lz");
     const u32 gMonPalette_BasculinWhiteStriped[] = INCBIN_U32("graphics/pokemon/basculin/white_striped/normal.gbapal.lz");
     const u32 gMonBackPic_BasculinWhiteStriped[] = INCBIN_U32("graphics/pokemon/basculin/white_striped/back.4bpp.lz");
     const u32 gMonShinyPalette_BasculinWhiteStriped[] = INCBIN_U32("graphics/pokemon/basculin/white_striped/shiny.gbapal.lz");
@@ -9438,7 +9438,7 @@ const u8 gMonFootprint_QuestionMark[] = INCBIN_U8("graphics/pokemon/question_mar
 #endif //P_FAMILY_NOIBAT
 
 #if P_FAMILY_XERNEAS
-    const u32 gMonFrontPic_XerneasNeutral[] = INCBIN_U32("graphics/pokemon/xerneas/front.4bpp.lz");
+    const u32 gMonFrontPic_XerneasNeutral[] = INCBIN_U32("graphics/pokemon/xerneas/anim_front.4bpp.lz");
     const u32 gMonPalette_XerneasNeutral[] = INCBIN_U32("graphics/pokemon/xerneas/normal.gbapal.lz");
     const u32 gMonBackPic_XerneasNeutral[] = INCBIN_U32("graphics/pokemon/xerneas/back.4bpp.lz");
     const u32 gMonShinyPalette_XerneasNeutral[] = INCBIN_U32("graphics/pokemon/xerneas/shiny.gbapal.lz");

src/data/pokemon/species_info/gen_9_families.h

@@ -6189,7 +6189,7 @@ const struct SpeciesInfo gSpeciesInfoGen9[] =
         //.frontAnimId = ANIM_V_SQUISH_AND_BOUNCE,
         .backPic = gMonBackPic_Munkidori,
         .backPicSize = MON_COORDS_SIZE(64, 64),
-        .backPicYOffset = 0,
+        .backPicYOffset = 2,
         //.backAnimId = BACK_ANIM_NONE,
         .palette = gMonPalette_Munkidori,
         .shinyPalette = gMonShinyPalette_Munkidori,